[android] refactor LocationComponent to utilize LocationEngineRequest

10 files changed, 421 insertions, 224 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponent.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponent.java
index d0b0bb733d..b2f1206d06 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponent.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponent.java
@@ -9,6 +9,7 @@ import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.annotation.RequiresPermission;
 import android.support.annotation.StyleRes;
+import android.support.annotation.VisibleForTesting;
 import android.view.WindowManager;
 
 import com.mapbox.android.core.location.LocationEngine;
@@ -28,13 +29,13 @@ import com.mapbox.mapboxsdk.maps.MapboxMap.OnCameraIdleListener;
 import com.mapbox.mapboxsdk.maps.MapboxMap.OnCameraMoveListener;
 import com.mapbox.mapboxsdk.maps.MapboxMap.OnMapClickListener;
 
+import java.lang.ref.WeakReference;
 import java.util.concurrent.CopyOnWriteArrayList;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicReference;
 
 import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
 import static android.Manifest.permission.ACCESS_FINE_LOCATION;
+import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_FASTEST_INTERVAL_MILLIS;
+import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_INTERVAL_MILLIS;
 import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_TRACKING_TILT_ANIM_DURATION;
 import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_TRACKING_ZOOM_ANIM_DURATION;
 
@@ -60,14 +61,23 @@ import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_T
  * <p>
  * Using this component requires you to request permission beforehand manually or using
  * {@link com.mapbox.android.core.permissions.PermissionsManager}. Either
- * {@code ACCESS_COARSE_LOCATION} or {@code ACCESS_FINE_LOCATION} permissions can be requested and
- * this plugin work as expected.
+ * {@code ACCESS_COARSE_LOCATION} or {@code ACCESS_FINE_LOCATION} permissions can be requested for
+ * this component to work as expected.
  * <p>
  * This component offers a default, built-in {@link LocationEngine} with some of the activation methods.
  * This engine will be obtained by {@link LocationEngineProvider#getBestLocationEngine(Context, boolean)} which defaults
- * to the {@link com.mapbox.android.core.location.MapboxFusedLocationEngineImpl}. If you'd like to utilize Google Play Services
+ * to the {@link com.mapbox.android.core.location.MapboxFusedLocationEngineImpl}. If you'd like to utilize Google
+ * Play Services
  * for more precise location updates, simply add the Google Play Location Services dependency in your build script.
  * This will make the default engine the {@link com.mapbox.android.core.location.GoogleLocationEngineImpl} instead.
+ * After a custom engine is passed to the component, or the built-in is initialized,
+ * the location updates are going to be requested with the {@link LocationEngineRequest}, either a default one,
+ * or the one passed during the activation.
+ * When using any engine, requesting/removing the location updates is going to be managed internally.
+ * <p>
+ * You can also push location updates to the component without any internal engine management.
+ * To achieve that, use {@link #activateLocationComponent(Context, boolean)} with false.
+ * No engine is going to be initialized and you can push location updates with {@link #forceLocationUpdate(Location)}.
  * <p>
  * For location puck animation purposes, like navigation,
  * we recommend limiting the maximum zoom level of the map for the best user experience.
@@ -76,17 +86,26 @@ import static com.mapbox.mapboxsdk.location.LocationComponentConstants.DEFAULT_T
  */
 public final class LocationComponent {
   private static final String TAG = "Mbgl-LocationComponent";
-  private static final long DEFAULT_INTERVAL_MILLIS = 1000;
-  private static final long DEFAULT_FASTEST_INTERVAL_MILLIS = 1000;
 
   @NonNull
   private final MapboxMap mapboxMap;
   private LocationComponentOptions options;
+  @NonNull
+  private InternalLocationEngineProvider internalLocationEngineProvider = new InternalLocationEngineProvider();
   @Nullable
   private LocationEngine locationEngine;
-  @Nullable
+  @NonNull
+  private LocationEngineRequest locationEngineRequest =
+    new LocationEngineRequest.Builder(DEFAULT_INTERVAL_MILLIS)
+      .setFastestInterval(DEFAULT_FASTEST_INTERVAL_MILLIS)
+      .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
+      .build();
+  private LocationEngineCallback<LocationEngineResult> currentLocationEngineListener
+    = new CurrentLocationEngineCallback(this);
+  private LocationEngineCallback<LocationEngineResult> lastLocationEngineListener
+    = new LastLocationEngineCallback(this);
+
   private CompassEngine compassEngine;
-  private boolean usingInternalLocationEngine;
 
   private LocationLayerController locationLayerController;
   private LocationCameraController locationCameraController;
@@ -144,6 +163,28 @@ public final class LocationComponent {
     this.mapboxMap = mapboxMap;
   }
 
+  @VisibleForTesting
+  LocationComponent(@NonNull MapboxMap mapboxMap,
+                    @NonNull LocationEngineCallback<LocationEngineResult> currentlistener,
+                    @NonNull LocationEngineCallback<LocationEngineResult> lastListener,
+                    @NonNull LocationLayerController locationLayerController,
+                    @NonNull LocationCameraController locationCameraController,
+                    @NonNull LocationAnimatorCoordinator locationAnimatorCoordinator,
+                    @NonNull StaleStateManager staleStateManager,
+                    @NonNull CompassEngine compassEngine,
+                    @NonNull InternalLocationEngineProvider internalLocationEngineProvider) {
+    this.mapboxMap = mapboxMap;
+    this.currentLocationEngineListener = currentlistener;
+    this.lastLocationEngineListener = lastListener;
+    this.locationLayerController = locationLayerController;
+    this.locationCameraController = locationCameraController;
+    this.locationAnimatorCoordinator = locationAnimatorCoordinator;
+    this.staleStateManager = staleStateManager;
+    this.compassEngine = compassEngine;
+    this.internalLocationEngineProvider = internalLocationEngineProvider;
+    isInitialized = true;
+  }
+
   /**
    * This method initializes the component and needs to be called before any other operations are performed.
    * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
@@ -154,8 +195,8 @@ public final class LocationComponent {
    */
   @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
   public void activateLocationComponent(@NonNull Context context) {
-    activateLocationComponent(context, LocationComponentOptions.createFromAttributes(context, R.style
-      .mapbox_LocationComponent));
+    activateLocationComponent(context,
+      LocationComponentOptions.createFromAttributes(context, R.style.mapbox_LocationComponent));
   }
 
   /**
@@ -178,6 +219,26 @@ public final class LocationComponent {
   /**
    * This method initializes the component and needs to be called before any other operations are performed.
    * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
+   *
+   * @param context                  the context
+   * @param useDefaultLocationEngine true if you want to initialize and use the built-in location engine or false if
+   *                                 there should be no location engine initialized
+   * @param locationEngineRequest    the location request
+   */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
+  public void activateLocationComponent(@NonNull Context context, boolean useDefaultLocationEngine,
+                                        @NonNull LocationEngineRequest locationEngineRequest) {
+    setLocationEngineRequest(locationEngineRequest);
+    if (useDefaultLocationEngine) {
+      activateLocationComponent(context, R.style.mapbox_LocationComponent);
+    } else {
+      activateLocationComponent(context, null, R.style.mapbox_LocationComponent);
+    }
+  }
+
+  /**
+   * This method initializes the component and needs to be called before any other operations are performed.
+   * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
    * <p>
    * <strong>Note</strong>: This method will initialize and use an internal {@link LocationEngine} when enabled.
    *
@@ -214,6 +275,7 @@ public final class LocationComponent {
    * @param locationEngine the engine, or null if you'd like to only force location updates
    * @param styleRes       the LocationComponent style res
    */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
   public void activateLocationComponent(@NonNull Context context, @Nullable LocationEngine locationEngine,
                                         @StyleRes int styleRes) {
     activateLocationComponent(context, locationEngine,
@@ -221,22 +283,53 @@ public final class LocationComponent {
   }
 
   /**
+   * This method initializes the component and needs to be called before any other operations are performed.
+   * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
+   *
+   * @param context               the context
+   * @param locationEngine        the engine, or null if you'd like to only force location updates
+   * @param locationEngineRequest the location request
+   * @param styleRes              the LocationComponent style res
+   */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
+  public void activateLocationComponent(@NonNull Context context, @Nullable LocationEngine locationEngine,
+                                        @NonNull LocationEngineRequest locationEngineRequest, @StyleRes int styleRes) {
+    activateLocationComponent(context, locationEngine, locationEngineRequest,
+      LocationComponentOptions.createFromAttributes(context, styleRes));
+  }
+
+  /**
    * This method will show the location icon and enable the camera tracking the location.
    *
    * @param context        the context
    * @param locationEngine the engine
    */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
   public void activateLocationComponent(@NonNull Context context, @NonNull LocationEngine locationEngine) {
     activateLocationComponent(context, locationEngine, R.style.mapbox_LocationComponent);
   }
 
   /**
+   * This method will show the location icon and enable the camera tracking the location.
+   *
+   * @param context               the context
+   * @param locationEngine        the engine
+   * @param locationEngineRequest the location request
+   */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
+  public void activateLocationComponent(@NonNull Context context, @NonNull LocationEngine locationEngine,
+                                        @NonNull LocationEngineRequest locationEngineRequest) {
+    activateLocationComponent(context, locationEngine, locationEngineRequest, R.style.mapbox_LocationComponent);
+  }
+
+  /**
    * This method initializes the component and needs to be called before any other operations are performed.
    * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
    *
    * @param locationEngine the engine, or null if you'd like to only force location updates
    * @param options        the options
    */
+  @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
   public void activateLocationComponent(@NonNull Context context, @Nullable LocationEngine locationEngine,
                                         @NonNull LocationComponentOptions options) {
     initialize(context, options);
@@ -245,6 +338,24 @@ public final class LocationComponent {
   }
 
   /**
+   * This method initializes the component and needs to be called before any other operations are performed.
+   * Afterwards, you can manage component's visibility by {@link #setLocationComponentEnabled(boolean)}.
+   *
+   * @param context               the context
+   * @param locationEngine        the engine, or null if you'd like to only force location updates
+   * @param locationEngineRequest the location request
+   * @param options               the options
+   */
+  public void activateLocationComponent(@NonNull Context context, @Nullable LocationEngine locationEngine,
+                                        @NonNull LocationEngineRequest locationEngineRequest,
+                                        @NonNull LocationComponentOptions options) {
+    initialize(context, options);
+    setLocationEngineRequest(locationEngineRequest);
+    setLocationEngine(locationEngine);
+    applyStyle(options);
+  }
+
+  /**
    * Manage component's visibility after activation.
    *
    * @param isEnabled true if the plugin should be visible and listen for location updates, false otherwise.
@@ -491,23 +602,46 @@ public final class LocationComponent {
    *
    * @param locationEngine a {@link LocationEngine} this component should use to handle updates
    */
+  @SuppressLint("MissingPermission")
   public void setLocationEngine(@Nullable LocationEngine locationEngine) {
     if (this.locationEngine != null) {
       // If internal location engines being used, extra steps need to be taken to deconstruct the
       // instance.
-      if (usingInternalLocationEngine) {
-        usingInternalLocationEngine = false;
-      }
-      this.locationEngine.removeLocationUpdates(locationEngineListener);
+      this.locationEngine.removeLocationUpdates(currentLocationEngineListener);
       this.locationEngine = null;
     }
 
     if (locationEngine != null) {
       this.locationEngine = locationEngine;
+      if (isLayerReady && isEnabled) {
+        setLastLocation();
+        locationEngine.requestLocationUpdates(
+          locationEngineRequest, currentLocationEngineListener, Looper.getMainLooper());
+      }
     }
   }
 
   /**
+   * Set the location request that's going to be used when requesting location updates.
+   *
+   * @param locationEngineRequest the location request
+   */
+  public void setLocationEngineRequest(@NonNull LocationEngineRequest locationEngineRequest) {
+    this.locationEngineRequest = locationEngineRequest;
+
+    // reset internal LocationEngine ref to re-request location updates if needed
+    setLocationEngine(locationEngine);
+  }
+
+  /**
+   * Get the location request that's going to be used when requesting location updates.
+   */
+  @NonNull
+  public LocationEngineRequest getLocationEngineRequest() {
+    return locationEngineRequest;
+  }
+
+  /**
    * Returns the current {@link LocationEngine} being used for updating the user location.
    *
    * @return the {@link LocationEngine} being used to update the user location
@@ -546,31 +680,7 @@ public final class LocationComponent {
   @Nullable
   @RequiresPermission(anyOf = {ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION})
   public Location getLastKnownLocation() {
-    if (locationEngine == null) {
-      return null;
-    }
-    // TODO: decide if we want to change signature of this method, for now make it work as is
-    final AtomicReference<LocationEngineResult> resultRef = new AtomicReference<>();
-    CountDownLatch latch = new CountDownLatch(1);
-    locationEngine.getLastLocation(new LocationEngineCallback<LocationEngineResult>() {
-      @Override
-      public void onSuccess(LocationEngineResult result) {
-        resultRef.set(result);
-        latch.countDown();
-      }
-
-      @Override
-      public void onFailure(@NonNull Exception exception) {
-        // TODO: log exception
-      }
-    });
-    try {
-      latch.await(2, TimeUnit.SECONDS);
-    } catch (InterruptedException ie) {
-      ie.printStackTrace();
-    }
-    LocationEngineResult result = resultRef.get();
-    return result != null ? result.getLastLocation() : null;
+    return lastLocation;
   }
 
   /**
@@ -750,13 +860,11 @@ public final class LocationComponent {
 
     if (isEnabled) {
       if (locationEngine != null) {
-        if (usingInternalLocationEngine) {
-          try {
-            locationEngine.requestLocationUpdates(getLocationRequst(DEFAULT_INTERVAL_MILLIS),
-                    locationEngineListener, Looper.getMainLooper());
-          } catch (SecurityException se) {
-            se.printStackTrace();
-          }
+        try {
+          locationEngine.requestLocationUpdates(
+            locationEngineRequest, currentLocationEngineListener, Looper.getMainLooper());
+        } catch (SecurityException se) {
+          Logger.e(TAG, "Unable to request location updates", se);
         }
       }
       setCameraMode(locationCameraController.getCameraMode());
@@ -776,9 +884,7 @@ public final class LocationComponent {
     compassEngine.onStop();
     locationAnimatorCoordinator.cancelAllAnimations();
     if (locationEngine != null) {
-      if (usingInternalLocationEngine) {
-        locationEngine.removeLocationUpdates(locationEngineListener);
-      }
+      locationEngine.removeLocationUpdates(currentLocationEngineListener);
     }
     mapboxMap.removeOnCameraMoveListener(onCameraMoveListener);
     mapboxMap.removeOnCameraIdleListener(onCameraIdleListener);
@@ -823,17 +929,9 @@ public final class LocationComponent {
 
   private void initializeLocationEngine(@NonNull Context context) {
     if (this.locationEngine != null) {
-      this.locationEngine.removeLocationUpdates(locationEngineListener);
+      this.locationEngine.removeLocationUpdates(currentLocationEngineListener);
     }
-    usingInternalLocationEngine = true;
-    locationEngine = LocationEngineProvider.getBestLocationEngine(context, false);
-  }
-
-  private static LocationEngineRequest getLocationRequst(long interval) {
-    return new LocationEngineRequest.Builder(interval)
-            .setFastestInterval(DEFAULT_FASTEST_INTERVAL_MILLIS)
-            .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
-            .build();
+    locationEngine = internalLocationEngineProvider.getBestLocationEngine(context, false);
   }
 
   private void enableLocationComponent() {
@@ -846,10 +944,13 @@ public final class LocationComponent {
     onLocationLayerStop();
   }
 
-  private void updateMapWithOptions(final LocationComponentOptions options) {
-    mapboxMap.setPadding(
-      options.padding()[0], options.padding()[1], options.padding()[2], options.padding()[3]
-    );
+  private void updateMapWithOptions(@NonNull LocationComponentOptions options) {
+    int[] padding = options.padding();
+    if (padding != null) {
+      mapboxMap.setPadding(
+        padding[0], padding[1], padding[2], padding[3]
+      );
+    }
   }
 
   /**
@@ -894,7 +995,11 @@ public final class LocationComponent {
    */
   @SuppressLint("MissingPermission")
   private void setLastLocation() {
-    updateLocation(getLastKnownLocation(), true);
+    if (locationEngine != null) {
+      locationEngine.getLastLocation(lastLocationEngineListener);
+    } else {
+      updateLocation(getLastKnownLocation(), true);
+    }
   }
 
   private void setLastCompassHeading() {
@@ -1005,22 +1110,49 @@ public final class LocationComponent {
     }
   };
 
-  @NonNull
-  private LocationEngineCallback<LocationEngineResult> locationEngineListener =
-          new LocationEngineCallback<LocationEngineResult>() {
+  @VisibleForTesting
+  static final class CurrentLocationEngineCallback implements LocationEngineCallback<LocationEngineResult> {
+    private final WeakReference<LocationComponent> componentWeakReference;
+
+    CurrentLocationEngineCallback(LocationComponent component) {
+      this.componentWeakReference = new WeakReference<>(component);
+    }
+
     @Override
     public void onSuccess(LocationEngineResult result) {
-      Location location = result.getLastLocation();
-      if (location != null) {
-        updateLocation(location, false);
+      LocationComponent component = componentWeakReference.get();
+      if (component != null) {
+        component.updateLocation(result.getLastLocation(), false);
       }
     }
 
     @Override
     public void onFailure(@NonNull Exception exception) {
-     // TODO: handle error
+      Logger.e(TAG, "Failed to obtain location update", exception);
+    }
+  }
+
+  @VisibleForTesting
+  static final class LastLocationEngineCallback implements LocationEngineCallback<LocationEngineResult> {
+    private final WeakReference<LocationComponent> componentWeakReference;
+
+    LastLocationEngineCallback(LocationComponent component) {
+      this.componentWeakReference = new WeakReference<>(component);
     }
-  };
+
+    @Override
+    public void onSuccess(LocationEngineResult result) {
+      LocationComponent component = componentWeakReference.get();
+      if (component != null) {
+        component.updateLocation(result.getLastLocation(), true);
+      }
+    }
+
+    @Override
+    public void onFailure(@NonNull Exception exception) {
+      Logger.e(TAG, "Failed to obtain last location update", exception);
+    }
+  }
 
   @NonNull
   private OnCameraTrackingChangedListener cameraTrackingChangedListener = new OnCameraTrackingChangedListener() {
@@ -1040,4 +1172,10 @@ public final class LocationComponent {
       }
     }
   };
+
+  static class InternalLocationEngineProvider {
+    LocationEngine getBestLocationEngine(@NonNull Context context, boolean background) {
+      return LocationEngineProvider.getBestLocationEngine(context, background);
+    }
+  }
 }
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentConstants.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentConstants.java
index 4376ef4e60..29fe413a22 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentConstants.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentConstants.java
@@ -26,6 +26,12 @@ final class LocationComponentConstants {
   // Threshold value to perform immediate camera/layer position update.
   static final double INSTANT_LOCATION_TRANSITION_THRESHOLD = 500_000;
 
+  // Default interval between location updates
+  static final long DEFAULT_INTERVAL_MILLIS = 1000;
+
+  // Default fastest acceptable interval between location updates
+  static final long DEFAULT_FASTEST_INTERVAL_MILLIS = 1000;
+
   // Sources
   static final String LOCATION_SOURCE = "mapbox-location-source";
   static final String PROPERTY_GPS_BEARING = "mapbox-property-gps-bearing";
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentOptions.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentOptions.java
index 25666895aa..db86db925c 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentOptions.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponentOptions.java
@@ -187,7 +187,7 @@ public class LocationComponentOptions implements Parcelable {
    * @return a new {@link LocationComponentOptions} object with the settings you defined in your style
    * resource
    */
-  @Nullable
+  @NonNull
   public static LocationComponentOptions createFromAttributes(@NonNull Context context,
                                                               @StyleRes int styleRes) {
 
diff --git a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/location/LocationComponentTest.kt b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/location/LocationComponentTest.kt
new file mode 100644
index 0000000000..a1c7164d53
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/location/LocationComponentTest.kt
@@ -0,0 +1,140 @@
+package com.mapbox.mapboxsdk.location
+
+import android.content.Context
+import android.content.res.Resources
+import android.content.res.TypedArray
+import android.os.Looper
+import com.mapbox.android.core.location.LocationEngine
+import com.mapbox.android.core.location.LocationEngineRequest
+import com.mapbox.mapboxsdk.R
+import com.mapbox.mapboxsdk.maps.MapboxMap
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mock
+import org.mockito.Mockito.*
+import org.mockito.MockitoAnnotations
+import org.robolectric.RobolectricTestRunner
+
+@RunWith(RobolectricTestRunner::class)
+class LocationComponentTest {
+  private lateinit var locationComponent: LocationComponent
+
+  @Mock
+  private lateinit var locationComponentOptions: LocationComponentOptions
+
+  @Mock
+  private lateinit var mapboxMap: MapboxMap
+
+  @Mock
+  private lateinit var context: Context
+
+  @Mock
+  private lateinit var locationEngine: LocationEngine
+
+  @Mock
+  private lateinit var locationEngineRequest: LocationEngineRequest
+
+  @Mock
+  private lateinit var currentListener: LocationComponent.CurrentLocationEngineCallback
+
+  @Mock
+  private lateinit var lastListener: LocationComponent.LastLocationEngineCallback
+
+  @Mock
+  private lateinit var compassEngine: CompassEngine
+
+  @Mock
+  private lateinit var locationLayerController: LocationLayerController
+
+  @Mock
+  private lateinit var locationCameraController: LocationCameraController
+
+  @Mock
+  private lateinit var locationAnimatorCoordinator: LocationAnimatorCoordinator
+
+  @Mock
+  private lateinit var staleStateManager: StaleStateManager
+
+  @Mock
+  private lateinit var locationEngineProvider: LocationComponent.InternalLocationEngineProvider
+
+  @Before
+  fun before() {
+    MockitoAnnotations.initMocks(this)
+    locationComponent = LocationComponent(mapboxMap, currentListener, lastListener, locationLayerController, locationCameraController, locationAnimatorCoordinator, staleStateManager, compassEngine, locationEngineProvider)
+    doReturn(locationEngine).`when`(locationEngineProvider).getBestLocationEngine(context, false)
+  }
+
+  @Test
+  fun activateWithRequestTest() {
+    locationComponent.activateLocationComponent(context, locationEngine, locationEngineRequest, locationComponentOptions)
+    Assert.assertEquals(locationEngineRequest, locationComponent.locationEngineRequest)
+
+    doReturn(mock(TypedArray::class.java)).`when`(context)
+      .obtainStyledAttributes(R.style.mapbox_LocationComponent, R.styleable.mapbox_LocationComponent)
+
+    val resources = mock(Resources::class.java)
+
+    doReturn(resources).`when`(context).resources
+    doReturn(0f).`when`(resources)
+      .getDimension(R.dimen.mapbox_locationComponentTrackingMultiFingerMoveThreshold)
+    doReturn(0f).`when`(resources)
+      .getDimension(R.dimen.mapbox_locationComponentTrackingMultiFingerMoveThreshold)
+    locationComponent.activateLocationComponent(context, true, locationEngineRequest)
+    Assert.assertEquals(locationEngineRequest, locationComponent.locationEngineRequest)
+  }
+
+  @Test
+  fun locationUpdatesWhenEnabledDisableTest() {
+    locationComponent.activateLocationComponent(context, locationEngine, locationEngineRequest, locationComponentOptions)
+    verify(locationEngine, times(0)).removeLocationUpdates(currentListener)
+    verify(locationEngine, times(0)).requestLocationUpdates(eq(locationEngineRequest), eq(currentListener), any(Looper::class.java))
+
+    locationComponent.onStart()
+    verify(locationEngine, times(0)).removeLocationUpdates(currentListener)
+    verify(locationEngine, times(0)).requestLocationUpdates(eq(locationEngineRequest), eq(currentListener), any(Looper::class.java))
+
+    locationComponent.isLocationComponentEnabled = true
+    verify(locationEngine).requestLocationUpdates(eq(locationEngineRequest), eq(currentListener), any(Looper::class.java))
+
+    locationComponent.isLocationComponentEnabled = false
+    verify(locationEngine).requestLocationUpdates(eq(locationEngineRequest), eq(currentListener), any(Looper::class.java))
+    verify(locationEngine).removeLocationUpdates(currentListener)
+  }
+
+  @Test
+  fun locationUpdatesWhenStartedStoppedTest() {
+    locationComponent.activateLocationComponent(context, locationEngine, locationEngineRequest, locationComponentOptions)
+    locationComponent.onStart()
+    locationComponent.isLocationComponentEnabled = true
+
+    locationComponent.onStop()
+    verify(locationEngine).removeLocationUpdates(currentListener)
+
+    locationComponent.onStart()
+    verify(locationEngine, times(2)).requestLocationUpdates(eq(locationEngineRequest), eq(currentListener), any(Looper::class.java))
+  }
+
+  @Test
+  fun locationUpdatesWhenNewRequestTest() {
+    locationComponent.activateLocationComponent(context, locationEngine, locationEngineRequest, locationComponentOptions)
+    locationComponent.onStart()
+    locationComponent.isLocationComponentEnabled = true
+
+    val newRequest = mock(LocationEngineRequest::class.java)
+    locationComponent.locationEngineRequest = newRequest
+    verify(locationEngine).removeLocationUpdates(currentListener)
+    verify(locationEngine).requestLocationUpdates(eq(newRequest), eq(currentListener), any(Looper::class.java))
+  }
+
+  @Test
+  fun lastLocationUpdateOnStartTest() {
+    locationComponent.activateLocationComponent(context, locationEngine, locationEngineRequest, locationComponentOptions)
+    locationComponent.onStart()
+    locationComponent.isLocationComponentEnabled = true
+
+    verify(locationEngine).getLastLocation(lastListener)
+  }
+}
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/build.gradle b/platform/android/MapboxGLAndroidSDKTestApp/build.gradle
index 5588db5fc9..384c49eb7f 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/build.gradle
+++ b/platform/android/MapboxGLAndroidSDKTestApp/build.gradle
@@ -65,7 +65,6 @@ dependencies {
     implementation dependenciesList.supportDesign
     implementation dependenciesList.supportConstraintLayout
 
-    // implementation dependenciesList.lost
     implementation dependenciesList.gmsLocation
     implementation dependenciesList.timber
     debugImplementation dependenciesList.leakCanaryDebug
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationFragmentActivity.kt b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationFragmentActivity.kt
index 98fe13e8eb..5626b82ccc 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationFragmentActivity.kt
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationFragmentActivity.kt
@@ -105,8 +105,7 @@ class LocationFragmentActivity : AppCompatActivity() {
       mapView.getMapAsync {
         mapboxMap = it
         component = mapboxMap.locationComponent
-        component?.activateLocationComponent(activity,
-                LocationEngineProvider.getBestLocationEngine(activity, false))
+        component?.activateLocationComponent(activity)
         component?.isLocationComponentEnabled = true
         component?.locationEngine?.getLastLocation(this)
       }
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationModesActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationModesActivity.java
index 078b5c7ab5..25d87c32c7 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationModesActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/LocationModesActivity.java
@@ -4,45 +4,36 @@ import android.annotation.SuppressLint;
 import android.content.res.Configuration;
 import android.location.Location;
 import android.os.Bundle;
-import android.os.Looper;
 import android.support.annotation.NonNull;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.ListPopupWindow;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.View;
 import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.Toast;
 
-import com.mapbox.android.core.location.LocationEngine;
-import com.mapbox.android.core.location.LocationEngineCallback;
-import com.mapbox.android.core.location.LocationEngineProvider;
 import com.mapbox.android.core.location.LocationEngineRequest;
-import com.mapbox.android.core.location.LocationEngineResult;
 import com.mapbox.android.core.permissions.PermissionsListener;
 import com.mapbox.android.core.permissions.PermissionsManager;
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.Style;
-import com.mapbox.mapboxsdk.location.OnLocationClickListener;
-import com.mapbox.mapboxsdk.maps.MapView;
-import com.mapbox.mapboxsdk.maps.MapboxMap;
-import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
-import com.mapbox.mapboxsdk.location.LocationComponentOptions;
 import com.mapbox.mapboxsdk.location.LocationComponent;
+import com.mapbox.mapboxsdk.location.LocationComponentOptions;
 import com.mapbox.mapboxsdk.location.OnCameraTrackingChangedListener;
+import com.mapbox.mapboxsdk.location.OnLocationClickListener;
 import com.mapbox.mapboxsdk.location.modes.CameraMode;
 import com.mapbox.mapboxsdk.location.modes.RenderMode;
+import com.mapbox.mapboxsdk.maps.MapView;
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.mapboxsdk.testapp.R;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class LocationModesActivity extends AppCompatActivity implements OnMapReadyCallback,
-        OnLocationClickListener, OnCameraTrackingChangedListener {
-
-  private static final long DEFAULT_INTERVAL_MILLIS = 1000;
-  private static final long DEFAULT_FASTEST_INTERVAL_MILLIS = 1000;
+  OnLocationClickListener, OnCameraTrackingChangedListener {
 
   private MapView mapView;
   private Button locationModeBtn;
@@ -51,7 +42,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
   private PermissionsManager permissionsManager;
 
   private LocationComponent locationComponent;
-  private LocationEngine locationEngine;
   private MapboxMap mapboxMap;
   private boolean customStyle;
 
@@ -67,8 +57,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
 
   private Location lastLocation;
 
-  private LocationEngineCallback<LocationEngineResult> locationEngineCallback;
-
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
@@ -77,25 +65,19 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
     mapView = findViewById(R.id.mapView);
 
     locationModeBtn = findViewById(R.id.button_location_mode);
-    locationModeBtn.setOnClickListener(new View.OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        if (locationComponent == null) {
-          return;
-        }
-        showModeListDialog();
+    locationModeBtn.setOnClickListener(v -> {
+      if (locationComponent == null) {
+        return;
       }
+      showModeListDialog();
     });
 
     locationTrackingBtn = findViewById(R.id.button_location_tracking);
-    locationTrackingBtn.setOnClickListener(new View.OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        if (locationComponent == null) {
-          return;
-        }
-        showTrackingListDialog();
+    locationTrackingBtn.setOnClickListener(v -> {
+      if (locationComponent == null) {
+        return;
       }
+      showTrackingListDialog();
     });
 
 
@@ -141,20 +123,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
   public void onMapReady(@NonNull MapboxMap mapboxMap) {
     this.mapboxMap = mapboxMap;
 
-    locationEngine = LocationEngineProvider.getBestLocationEngine(getApplicationContext(),
-            false);
-    locationEngineCallback = new LocationEngineCallback<LocationEngineResult>() {
-      @Override
-      public void onSuccess(LocationEngineResult result) {
-        // noop
-      }
-
-      @Override
-      public void onFailure(@NonNull Exception exception) {
-        // noop
-      }
-    };
-
     int[] padding;
     if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
       padding = new int[] {0, 750, 0, 0};
@@ -168,7 +136,13 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
       .build();
 
     locationComponent = mapboxMap.getLocationComponent();
-    locationComponent.activateLocationComponent(this, locationEngine, options);
+    locationComponent.activateLocationComponent(this, true,
+      new LocationEngineRequest.Builder(750)
+        .setFastestInterval(750)
+        .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
+        .build()
+    );
+    locationComponent.applyStyle(options);
     locationComponent.setLocationComponentEnabled(true);
     locationComponent.addOnLocationClickListener(this);
     locationComponent.addOnCameraTrackingChangedListener(this);
@@ -248,14 +222,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
   protected void onStart() {
     super.onStart();
     mapView.onStart();
-    if (locationEngine != null) {
-      try {
-        locationEngine.requestLocationUpdates(getLocationRequst(DEFAULT_INTERVAL_MILLIS),
-                locationEngineCallback, Looper.getMainLooper());
-      } catch (SecurityException se) {
-        se.printStackTrace();
-      }
-    }
   }
 
   @Override
@@ -274,9 +240,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
   protected void onStop() {
     super.onStop();
     mapView.onStop();
-    if (locationEngine != null) {
-      locationEngine.removeLocationUpdates(locationEngineCallback);
-    }
   }
 
   @SuppressLint("MissingPermission")
@@ -303,13 +266,6 @@ public class LocationModesActivity extends AppCompatActivity implements OnMapRea
     mapView.onLowMemory();
   }
 
-  private static LocationEngineRequest getLocationRequst(long interval) {
-    return new LocationEngineRequest.Builder(interval)
-            .setFastestInterval(DEFAULT_FASTEST_INTERVAL_MILLIS)
-            .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
-            .build();
-  }
-
   @Override
   public void onLocationComponentClick() {
     Toast.makeText(this, "OnLocationComponentClick", Toast.LENGTH_LONG).show();
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/ManualLocationUpdatesActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/ManualLocationUpdatesActivity.java
index ee65b97570..50f86efbbd 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/ManualLocationUpdatesActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/location/ManualLocationUpdatesActivity.java
@@ -1,38 +1,28 @@
 package com.mapbox.mapboxsdk.testapp.activity.location;
 
-import android.location.Location;
+import android.annotation.SuppressLint;
 import android.os.Bundle;
-import android.os.Looper;
 import android.support.annotation.NonNull;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v7.app.AppCompatActivity;
-import android.view.View;
 import android.widget.Toast;
 
 import com.mapbox.android.core.location.LocationEngine;
-import com.mapbox.android.core.location.LocationEngineCallback;
 import com.mapbox.android.core.location.LocationEngineProvider;
 import com.mapbox.android.core.location.LocationEngineRequest;
-import com.mapbox.android.core.location.LocationEngineResult;
 import com.mapbox.android.core.permissions.PermissionsListener;
 import com.mapbox.android.core.permissions.PermissionsManager;
 import com.mapbox.mapboxsdk.geometry.LatLngBounds;
+import com.mapbox.mapboxsdk.location.LocationComponent;
+import com.mapbox.mapboxsdk.location.modes.RenderMode;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
-import com.mapbox.mapboxsdk.location.LocationComponent;
-import com.mapbox.mapboxsdk.location.modes.RenderMode;
 import com.mapbox.mapboxsdk.testapp.R;
 
 import java.util.List;
 
-import timber.log.Timber;
-
-public class ManualLocationUpdatesActivity extends AppCompatActivity implements OnMapReadyCallback,
-        LocationEngineCallback<LocationEngineResult> {
-
-  private static final long DEFAULT_INTERVAL_MILLIS = 1000;
-  private static final long DEFAULT_FASTEST_INTERVAL_MILLIS = 1000;
+public class ManualLocationUpdatesActivity extends AppCompatActivity implements OnMapReadyCallback {
 
   private MapView mapView;
   private LocationComponent locationComponent;
@@ -44,43 +34,38 @@ public class ManualLocationUpdatesActivity extends AppCompatActivity implements
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_location_manual_update);
 
+    locationEngine = LocationEngineProvider.getBestLocationEngine(this, false);
+
     FloatingActionButton fabManualUpdate = findViewById(R.id.fabManualLocationChange);
-    fabManualUpdate.setOnClickListener(new View.OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        if (locationComponent != null && locationComponent.getLocationEngine() == null) {
-          locationComponent.forceLocationUpdate(
-            Utils.getRandomLocation(LatLngBounds.from(60, 25, 40, -5)));
-        }
+    fabManualUpdate.setOnClickListener(v -> {
+      if (locationComponent != null && locationComponent.getLocationEngine() == null) {
+        locationComponent.forceLocationUpdate(
+          Utils.getRandomLocation(LatLngBounds.from(60, 25, 40, -5)));
       }
     });
     fabManualUpdate.setEnabled(false);
 
     FloatingActionButton fabToggle = findViewById(R.id.fabToggleManualLocation);
-    fabToggle.setOnClickListener(new View.OnClickListener() {
-      @Override
-      public void onClick(View v) {
-        if (locationComponent != null) {
-          locationComponent.setLocationEngine(locationComponent.getLocationEngine() == null ? locationEngine :
-            null);
-
-          if (locationComponent.getLocationEngine() == null) {
-            fabToggle.setImageResource(R.drawable.ic_layers_clear);
-            fabManualUpdate.setEnabled(true);
-            fabManualUpdate.setAlpha(1f);
-            Toast.makeText(
-              ManualLocationUpdatesActivity.this.getApplicationContext(),
-              "LocationEngine disable, use manual updates",
-              Toast.LENGTH_SHORT).show();
-          } else {
-            fabToggle.setImageResource(R.drawable.ic_layers);
-            fabManualUpdate.setEnabled(false);
-            fabManualUpdate.setAlpha(0.5f);
-            Toast.makeText(
-              ManualLocationUpdatesActivity.this.getApplicationContext(),
-              "LocationEngine enabled",
-              Toast.LENGTH_SHORT).show();
-          }
+    fabToggle.setOnClickListener(v -> {
+      if (locationComponent != null) {
+        locationComponent.setLocationEngine(locationComponent.getLocationEngine() == null ? locationEngine : null);
+
+        if (locationComponent.getLocationEngine() == null) {
+          fabToggle.setImageResource(R.drawable.ic_layers_clear);
+          fabManualUpdate.setEnabled(true);
+          fabManualUpdate.setAlpha(1f);
+          Toast.makeText(
+            ManualLocationUpdatesActivity.this.getApplicationContext(),
+            "LocationEngine disabled, use manual updates",
+            Toast.LENGTH_SHORT).show();
+        } else {
+          fabToggle.setImageResource(R.drawable.ic_layers);
+          fabManualUpdate.setEnabled(false);
+          fabManualUpdate.setAlpha(0.5f);
+          Toast.makeText(
+            ManualLocationUpdatesActivity.this.getApplicationContext(),
+            "LocationEngine enabled",
+            Toast.LENGTH_SHORT).show();
         }
       }
     });
@@ -119,35 +104,25 @@ public class ManualLocationUpdatesActivity extends AppCompatActivity implements
     permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
   }
 
+  @SuppressLint("MissingPermission")
   @Override
   public void onMapReady(@NonNull MapboxMap mapboxMap) {
-    locationEngine = LocationEngineProvider.getBestLocationEngine(getApplicationContext(),
-            false);
     locationComponent = mapboxMap.getLocationComponent();
-    locationComponent.activateLocationComponent(this, locationEngine);
+    locationComponent.activateLocationComponent(
+      this,
+      locationEngine,
+      new LocationEngineRequest.Builder(500)
+        .setFastestInterval(500)
+        .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
+        .build());
     locationComponent.setLocationComponentEnabled(true);
     locationComponent.setRenderMode(RenderMode.COMPASS);
   }
 
-  private static LocationEngineRequest getLocationRequst(long interval) {
-    return new LocationEngineRequest.Builder(interval)
-            .setFastestInterval(DEFAULT_FASTEST_INTERVAL_MILLIS)
-            .setPriority(LocationEngineRequest.PRIORITY_HIGH_ACCURACY)
-            .build();
-  }
-
   @Override
   protected void onStart() {
     super.onStart();
     mapView.onStart();
-    if (locationEngine != null) {
-      try {
-        locationEngine.requestLocationUpdates(getLocationRequst(DEFAULT_INTERVAL_MILLIS),
-                this, Looper.getMainLooper());
-      } catch (SecurityException se) {
-        se.printStackTrace();
-      }
-    }
   }
 
   @Override
@@ -166,9 +141,6 @@ public class ManualLocationUpdatesActivity extends AppCompatActivity implements
   protected void onStop() {
     super.onStop();
     mapView.onStop();
-    if (locationEngine != null) {
-      locationEngine.removeLocationUpdates(this);
-    }
   }
 
   @Override
@@ -188,17 +160,4 @@ public class ManualLocationUpdatesActivity extends AppCompatActivity implements
     super.onLowMemory();
     mapView.onLowMemory();
   }
-
-  @Override
-  public void onSuccess(LocationEngineResult result) {
-    Location location = result.getLastLocation();
-    if (location != null) {
-      Timber.d("Location change occurred: %s", location.toString());
-    }
-  }
-
-  @Override
-  public void onFailure(@NonNull Exception exception) {
-    Timber.d("Location engine error occurred: %s", exception.getMessage());
-  }
 }
\ No newline at end of file
diff --git a/platform/android/build.gradle b/platform/android/build.gradle
index 86e4f4f5f8..c2bcde180d 100644
--- a/platform/android/build.gradle
+++ b/platform/android/build.gradle
@@ -18,7 +18,7 @@ allprojects {
         google()
         jcenter()
         // Snapshot repository
-        //maven { url "http://oss.sonatype.org/content/repositories/snapshots/" }
+        maven { url "http://oss.sonatype.org/content/repositories/snapshots/" }
     }
 }
 
diff --git a/platform/android/gradle/dependencies.gradle b/platform/android/gradle/dependencies.gradle
index 296572d214..61f619964f 100644
--- a/platform/android/gradle/dependencies.gradle
+++ b/platform/android/gradle/dependencies.gradle
@@ -9,7 +9,7 @@ ext {
 
     versions = [
             mapboxServices  : '4.1.0',
-            mapboxTelemetry : '4.0.0',
+            mapboxTelemetry : '4.1.0-SNAPSHOT',
             mapboxGestures  : '0.3.0',
             supportLib      : '27.1.1',
             constraintLayout: '1.1.2',